TWM456934U - Wire fuse device for use in high current - Google Patents

Description

High current fuse device

The present invention is a fuse device for high current, a plug structure having such a fuse device, and an electrical device having such a plug structure.

In electric power plants of motor vehicles, that is, in electric or hybrid vehicles, high power must be transmitted from an energy source (such as a battery unit) to the use end (such as an electric cooling compressor) in order to minimize transmission. The resulting loss, the (high current) electric device consisting of the battery unit and the electric motor must be driven at a relatively high voltage, especially above 12V, 24V or 48V, which is used in conventional motor vehicles. Inside the line system.

In addition to this high voltage device, the conventional motor vehicle includes a conventional power wiring system. Like a conventional motor vehicle, the wiring system uses a voltage of 12V, 24V or 48V. On the one hand, this phenomenon can be attributed to the conventional The circuit system used in the motor-driven vehicle has the same components, which can save development and production costs. On the other hand, since the low voltage does not pose a significant danger to the maintenance personnel in the event of an operation error, the general maintenance factory can also use such a line. The system is maintained and repaired.

In contrast, this high-current device has a relatively high potential hazard due to high voltage in an electric or hybrid vehicle, so a single component or an integral unit is often designed to be inaccessible to maintenance personnel, which can be achieved by a high current system. Each component or unit is installed in the outer casing, and the outer casing must be broken before being opened. When the components of the inner unit of the outer casing are damaged, the maintenance personnel only need to replace the entire set of units. Since the outer casing has electrical insulating properties, the lifting does not have any danger. However, it can be seen that replacing the components that are still fully functional in the unit together with the components that have lost functionality can result in unnecessary and unavoidable cost waste.

In a typical power system, a high-current device of an electric motor vehicle is also equipped with a fuse device, which fails (fuse) during a short over-current load, and thus makes the current transmission permanent. Interrupted, thereby protecting the high unit price components in another high current device from damage.

In current high-current devices for motor-driven vehicles, high-current fuse devices are usually combined with several electronic components into a single unit, wherein each component is mounted in an unopenable (non-destructible) enclosure to prevent maintenance personnel from reaching. However, this leads to the fact that when the fuse device is blown (this is the basic function of the fuse device), not only the replacement of the high current fuse device, but also the replacement of the entire unit is required, resulting in an unacceptably high in many cases. Maintenance costs.

From the current state of the art, the function of the present invention is to provide a high current device that prevents high current overload, and only needs to replace the high current fuse device of the high current device when damaged, and at the same time, the maintenance personnel do not have to replace the operation. Any danger.

The present invention has a plug structure of such a fuse device, and an electronic device having such a plug structure.

The present invention is for a high current fuse device comprising a high current fuse and an outer casing electrically insulated from the high current fuse, wherein the outer casing forms a plug-in portion and can be plugged with a pair Conductive contact and mechanical connection.

By incorporating a high current fuse into an insulated enclosure, the danger of direct contact with the conductive components of the high current device can be avoided; the housing forms a plug-in location that can be in conductive contact with the opposing connector And a mechanical connection whereby the high current fuse device can be quickly and easily installed in a high current device.

The plug structure of the present invention includes a plug portion of a fuse device and an opposite connector.

The circuit system of the present invention comprises a (high current) power supply, a (high current) use terminal, and a transmission system connecting the power supply and the use end, wherein the transmission system includes at least one plug-in device.

The outer casing of the fuse device is of a permanently closed configuration, that is, the outer casing cannot be opened without damage, thereby ensuring that the high current fuse device inside the outer casing is not removed or replaced.

If the design is preferentially designed, it has a special advantage when the plug-in portion on the housing has an address code set for the individual current intensity required for protection of the high-current fuse device; therefore, for example, a built-in tolerable current intensity Fuse device to 20A high current fuse The address coding design of the structure can be different from another plug-in structure with a fuse device that can tolerate current intensity to 40A high current fuse. By means of individual address coding, a high current fuse can be ensured to be blown. The faulty fuse device can only be replaced by another high current fuse device having the same tolerable current intensity. The address code can be specially formed by one or several ridges/grooves, and the ridges/grooves can be combined with The corresponding ribs/grooves on the mating connectors work together, and if necessary, additional or alternative schemes can be coded using color addressing.

The address fuses of the fuse device and the opposite connector of the present invention can be individually designed not only for different tolerable current strengths, but also for addressing and fixing the fuse device itself in the electrical device of the present invention. The addressing code of the plug-in unit in the creation of the electrical device is designed to be different, when the plug-in interface (excluding the address code) of the author connector is compatible with the plug-in interface of another electrical device plug-in unit This type of design is particularly excellent; in the electrical device of the present invention, the power supply wire system can be connected to a wire system for connecting the use end through a suitable plug-in unit, and the whole electrical device is used as much as possible. The same connector can help maintain the low production cost of electrical installations.

In a preferred design of the present fuse device, the outer casing may comprise at least one barrier layer that is coated over the fuse (preferably fully encapsulated), whereby the barrier layer prevents the output or intrusion of the electromagnetic field.

In another preferred design of the present fuse device, the plug portion of the fuse device serves as a maintenance breaker so that when the fuse device is removed from the electrical device, the electrical device can be switched to the power-off state; Before the maintenance and repair of the electrical device, only the fuse device mounted in the electrical device via the plug is removed, and thereby the electrical device is switched to the power-off state.

To this end, the plug portion of the present fuse device and the opposite connector have at least two low current contact elements in addition to the high current fuses electrically connected to the high current contact elements. In the plugged state of the creation of the plug structure, the low current contact element can represent a part of a low current loop, and the fuse device is removed from the opposite connector, which can cause the interruption of the low current loop, thereby enabling the present The power of the authoring electrical device is switched to the power-off state.

The high-current contact element and the low-current contact element are preferably designed as follows, and are built in the fuse device and the opposite connector: the plug portion of the fuse device is combined with the opposite connector At the beginning, the high-current contact elements of the plugged part and the opposite connector will firstly interact with each other. Contact, then the low-current contact elements of the plug-in portion and the opposite connector are in contact with each other; when the plug-in portion and the counter-connector are removed, the contact between the low-current contact elements is first released, and then the high current is released. Contact between the contact elements, thereby ensuring that when the plugged portion is in contact with the high current contact element of the opposite connector and is released from contact, no high voltage is present therein, thereby avoiding high incomplete contact An arc discharge occurs between the voltage contact elements.

The high-current contact element and/or low-current contact element of the opposite connector has the following contact protection devices, which can form a pair of operators and maintenance personnel to take the risk of accidental high voltage: IP1X level (to prevent hand pressure contact), IP2X rating (to prevent finger entry), IP3X rating (to prevent tool entry), IP4X rating (to prevent wires from coming into contact), IP5X rating (to prevent all contact completely), these safeguards are based on the specification EN 60529:1991+A1:2000 The German version is designed in accordance with DIN EN 60529.

In another preferred design of the present invention, the plug between the plug portion of the fuse device and the opposing connector is waterproof, using one or several sealing elements.

1‧‧‧Fuse device

2‧‧‧ opposite connector

3‧‧‧High current fuse

4‧‧‧Contact unit

5‧‧‧Fuse body

6‧‧‧Shell

7‧‧‧ hollow cylindrical part

8‧‧‧ Shell

9‧‧‧Carmen

10‧‧‧ accommodating department

11‧‧‧Card points

12‧‧ ‧ ribs

13‧‧‧ Groove

14‧‧‧First high current contact element

15‧‧‧Second high current contact element

16‧‧‧Low current contact elements

17‧‧‧Socket housing

18‧‧‧Flexible parts

19‧‧‧Contact probe

20‧‧‧First outer conductor

21‧‧‧ housing

22‧‧‧Second outer conductor

23‧‧‧ Third outer conductor

24‧‧‧Sealing components

25‧‧‧Aperture extension

26‧‧‧rails

The first figure shows a perspective view of the fuse device and the pair of connectors in the unplugged state of the present embodiment.

The second figure is a perspective view of the first figure in another state in the unplugged state.

The third figure is a cross-sectional view of the first figure in the unplugged state.

The fourth figure is a cross-sectional view of the fuse device of the present embodiment.

The fifth figure is a perspective view of the fuse device and the pair of connectors in the plugged state of the present embodiment.

Figure 6 is a cross-sectional view showing the fuse device and the pair of connectors in the plugged state of the present embodiment.

For the purpose of achieving the above-mentioned purpose and effect of the above-mentioned use, a preferred and feasible embodiment is given, and as shown in the drawings, the details are as follows: the present fuse device and the opposite connector For an embodiment, please refer to the first to sixth figures, which is provided with a fuse device 1 and a corresponding opposite connector 2, the opposite connector 2 is positionable on the fuse device 1 , the fuse device 1 is provided with a through hole, the opposite connector 2 can penetrate the through hole and the fuse device 1 is inserted together, the opposite connector 2 can be constructed with an angled connector.

The fuse device 1 is provided with a high-current fuse 3 of a conventional configuration, and a fuse body 5 is located between the contact units 4 which are cylindrical at both ends, and the current intensity flowing through the high-current fuse 3 exceeds When the maximum current can be tolerated, the fuse body 5 is blown, thereby interrupting the current loop built in the high current fuse 3, and the maximum allowable current intensity determined by the high current fuse 3 is applied to The electric drive of a motor vehicle can be 20A, 40A or 60A depending on the location of use.

In addition, the fuse device 1 is provided with an outer casing 6 made of an insulating material, and a high-current fuse 3 is mounted therein, and the outer casing 6 forms a plug-in portion at one end thereof, and the plug-in portion is inserted through a plug and a The opposing connector 2 is in conductive contact and mechanically coupled, and the plugging interface of the plugging portion comprises a hollow cylindrical portion 7 of the outer casing 6, which portion can be inserted into the corresponding receiving opening of the outer casing 8 of the opposite connector 2, The outer side of the outer casing 6 of the fuse device 1 is provided with two oppositely disposed latches 9, the plug ends of which are fixed to the hollow cylindrical portion 7, and when the plugged portion of the fuse device 1 is inserted into the opposite connector 2 When inside, the cassette 9 can be pushed into the corresponding receiving portion 10 of the opposite connector 2, and the two fastening points 11 are locked to the rear of the corresponding corresponding portion of the receiving portion 10, thereby enabling the fuse device 1 and the opposite connector 2 have a connection direction (opposite to the removal direction); the open end of the second cassette 9 is manually moved toward the outer casing 6, so that the connection can be removed again. The fastening point 11 is removed from the rear of the ridge of the accommodating portion 10, and a pulling force is applied to the fuse device 1 to melt The wire device 1 is pulled out of the opposite connector 2.

On the outer side of the hollow cylindrical portion 7 of the fuse device 1, a plurality of ribs 12 arranged in the plugging direction are provided, and the ribs 12 can be inserted into the recess 13 inside the outer casing 8 of the counter connector 2 in the inserted state. The rib 12 and the groove 13 have the function of addressing code together, so that the fuse device 1 of a specific configuration can be inserted into the opposite connector 2 only by one direction, and the benefit of the address coding is determinable. The maximum current intensity that the high current fuse 3 can tolerate, a fuse device 1 that has blown the high current fuse 3, can only be replaced by another fuse device 1 having a high current fuse 3 of the same allowable maximum current strength.

In addition, the plug-in interface of the plug-in portion of the fuse device 1 is electrically insulated from each other. a first high-current contact element 14 shaped as a contact probe, which in the plugged-in state, can be inserted into the opposite connector 2 with a second high-current contact element 15 which is electrically insulated from each other into a contact socket, and The first high current contact element 14 and the second high current contact element 15 are electrically connected, whereby the high current fuse can be built into a high current loop to protect the current overload; in this case, a battery unit can pass the current The circuit supplies an electric drive motor of a motor vehicle.

In addition, the plug-in interface of the plug-in portion of the fuse device 1 further includes two low-current contact elements that are shaped as contact probes, and in the plugged state, can be inserted into the corresponding opposite connectors 2 to be in contact with each other. The low current contact element 16 of the socket is electrically connected thereto. The contact socket is mounted in the socket housing 17 of the opposite connector 2. The basic function of the low current contact element of the connector is as a switch in the plugged state. The low current circuit driven by a low voltage (such as 12V) can be formed, and can be interrupted when the fuse device 1 is removed from the opposite connector 2, and the low current circuit can be connected with a control device. The device can simultaneously cut off the high current loop when the low current loop is interrupted, such that the components in the plurality of high current loops, including the high current contact component 16 of the opposing plug 2, are powered off.

When the contact unit 4 of the high current fuse device 1 is arranged at the proximal end, the cylindrical contact unit 4 at both ends thereof and the first high current contact element 14 and the second high current contact element 15 of the fuse device 1 are electrically connected. The contact is made by the contact element of the elastic member 18, the elastic member is hung on the contact unit 4 of the high current fuse 3, and a contact probe 19 is coupled to the elastic member 18 and embedded with the first high current. The contact element 14 corresponds to the receptacle-like receiving portion; when the contact unit 4 of the high-current fuse 3 is arranged at the distal end, a contact element of the elastic member 18 can also be used to form the contact element unit 4 corresponding thereto. The first high-current contact element 14 of the fuse device 1 is electrically connected. The elastic member 18 is hung on the contact unit 4 of the high-current fuse 3. A guide rail 26 is disposed on the side of the elastic member 18 and extends to the phase. Corresponding to the first high current contact element 14.

In addition, a barrier layer is built in the plug structure to prevent the output or intrusion of the electromagnetic field; for this reason, a first outer conductor 20 (made of an electrically conductive material) is disposed in the outer casing 6 of the fuse device 1. The first outer conductor 20 is coated on the surface of the high current fuse 3 and the first high current contact element 14, but the first outer conductor 20 is in contact with the high current fuse 3 and the first high current. The element 14 is insulated. On the other end opposite to the plug end, the first outer conductor 20 is closed by a housing 21 which is also made of a conductive material; the first outer conductor 20 is on the plug end. Having a radial contact with a second outer conductor 22 configured as an elastic member; the second outer conductor 22 may be electrically connected to a third outer conductor 23 when the plug-in structure is in an inserted state, the third outer The conductor 23 is looped around the surface of the second high current contact element 15 inside the outer casing 8 of the counter connector 2, but is insulated therefrom.

In the range of the plug end of the fuse device 1, the inner side of the outer casing 6 is provided with an annular sealing member 24, which is displaced when the fuse device 1 and the counter connector 2 are inserted together. To the outer edge of the annular extension 25 of the opposite connector 2, the sealing element 24 is radially deformed to achieve the predetermined sealing effect, and the sealing element 24 can be used to accommodate the fuse device 1. The outer casing 6 and the outer casing 8 of the opposite connector 2, the first high current contact element 14 and the second high current contact element 15, and the low current contact element 16 are effectively isolated from the external environment to prevent moisture enter.

In summary, the present invention has achieved the intended use and effect, and is more desirable and practical than the prior art. However, the above embodiments are only specifically described for the preferred embodiment of the present invention. The present invention is not intended to limit the scope of the invention, and all other equivalents and modifications may be included in the scope of the invention covered by the present invention.

1‧‧‧Fuse device

2‧‧‧ opposite connector

3‧‧‧High current fuse

4‧‧‧Contact unit

5‧‧‧Fuse body

6‧‧‧Shell

7‧‧‧ hollow cylindrical part

8‧‧‧ Shell

10‧‧‧ accommodating department

14‧‧‧First high current contact element

15‧‧‧Second high current contact element

17‧‧‧Socket housing

20‧‧‧First outer conductor

21‧‧‧ housing

22‧‧‧Second outer conductor

24‧‧‧Sealing components

26‧‧‧rails

Claims (13)

A high current fuse device having a high current fuse and a casing covering the high current fuse, wherein the outer casing forms a plug-in portion and is in conductive contact with the pair of connectors Mechanical connection. The high current fuse device of claim 1, wherein the outer casing permanently houses the high current fuse. The fuse device for high current according to claim 1, wherein the fuse device and the opposite connector have at least two high current contact elements and at least two low current contact elements. The fuse device for high current according to claim 1, wherein the outer casing is provided with a barrier layer. The fuse device for high current according to claim 1, wherein the plug portion of the fuse device is provided with an individual address code set for a maximum allowable current intensity determined by the high current fuse. The fuse device for high current according to claim 1, wherein the fuse device and the opposite connector correspond to each other. The fuse device for high current according to claim 1, wherein the plug portion of the fuse device and the interposer of the opposite connector are waterproof. The fuse device for high current according to claim 3, wherein the plug portion of the fuse device and the opposite connector are in a plugged state, firstly, the high current contact of the plug portion The component is in contact with the high current contact component of the opposing connector, and then the low current contact component of the plug site contacts the low current contact component of the opposing connector. The fuse device for high current according to claim 1, wherein the fuse device has the following different levels of protection against contact with high current contact elements and low current contact elements, IP1X rating (preventing hands) Pressure contact), IP2X rating (to prevent finger entry), IP3X rating (to prevent tool entry), IP4X rating (to prevent wires from coming into contact), IP5X rating (to prevent all contact completely). The fuse device for high current as described in claim 9 is designed according to the German version DIN EN 60529 of the specification EN 60529:1991+A1:2000. The fuse device for high current according to claim 1, wherein the power source has a power source, An electrical use end and an electrical device of a wire system electrically connectable to the power source and the electrical use end, wherein the wire system includes at least one pair of connectors. The fuse device for high current according to claim 11, wherein at least one wire of the wire system is built in the wire system via a plug-in unit, and the plug-in unit of the wire is on the plug-in interface In addition to the individual addressing code, it is consistent with the device of the opposite connector. The fuse device for high current according to claim 11, wherein the function of the plug portion of the fuse device is to repair the breaker, so that the fuse device and the opposite connector are removed. When the electrical device is switched to the no-voltage state.